Fulfill some code serializer related TODOs.

src/code-stubs-hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/bailout-reason.h"
 #include "src/code-stubs.h"
 #include "src/field-index.h"
 #include "src/hydrogen.h"
@@ skipping 253 matching lines @@
   if (stub->IsUninitialized() && descriptor.has_miss_handler()) {
     DCHECK(!descriptor.stack_parameter_count().is_valid());
     return stub->GenerateLightweightMissCode(descriptor.miss_handler());
   }
   base::ElapsedTimer timer;
   if (FLAG_profile_hydrogen_code_stub_compilation) {
     timer.Start();
   }
   CodeStubGraphBuilder<Stub> builder(isolate, stub);
   LChunk* chunk = OptimizeGraph(builder.CreateGraph());
-  // TODO(yangguo) remove this once the code serializer handles code stubs.
-  if (FLAG_serialize_toplevel) chunk->info()->PrepareForSerializing();
   Handle<Code> code = chunk->Codegen();
   if (FLAG_profile_hydrogen_code_stub_compilation) {
     OFStream os(stdout);
     os << "[Lazy compilation of " << stub << " took "
        << timer.Elapsed().InMillisecondsF() << " ms]" << std::endl;
   }
   return code;
 }
 
 
@@ skipping 1716 matching lines @@
 
   // Probe the stub cache.
   Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
       Code::ComputeHandlerFlags(Code::LOAD_IC));
   Add<HTailCallThroughMegamorphicCache>(receiver, name, flags);
 
   // We never continue.
   return graph()->GetConstant0();
 }
 } }  // namespace v8::internal